/*
 * SPDX-License-Identifier: Apache-2.0
 * Copyright 2018-2019 The Feast Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package feast;

import com.google.common.collect.Lists;
import org.apache.beam.sdk.transforms.SerializableFunction;
import org.junit.Assert;

public class FeastMatchers {

  /** Can be used with the PAssert.that(..).satisfies(fn) method. */
  public static <T> SerializableFunction<Iterable<T>, Void> hasCount(long count) {
    return (Iterable<T> iterable) -> {
      Assert.assertEquals(count, Lists.newArrayList(iterable).size());
      return null;
    };
  }
}
